diff --git a/package-lock.json b/package-lock.json
index 2ffa67b..a964d93 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,7 +29,7 @@
       },
       "devDependencies": {
         "@tailwindcss/postcss": "^4",
-        "@types/node": "^20",
+        "@types/node": "^26",
         "@types/papaparse": "^5.5.2",
         "@types/react": "^19",
         "@types/react-dom": "^19",
@@ -3644,13 +3644,13 @@
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "20.19.37",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.19.37.tgz",
-      "integrity": "sha512-8kzdPJ3FsNsVIurqBs7oodNnCEVbni9yUEkaHbgptDACOPW04jimGagZ51E6+lXUwJjgnBw+hyko/lkFWCldqw==",
+      "version": "26.1.0",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.1.0.tgz",
+      "integrity": "sha512-O0A1G3xPGy4w7AgQdAQYUlQ+BKk2Oovw8eRpofyp5KdBZULnbe+WqaOVNrm705SHphCiG4XHsACrSmPu1f+Kgw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~6.21.0"
+        "undici-types": "~8.3.0"
       }
     },
     "node_modules/@types/papaparse": {
@@ -11636,9 +11636,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "6.21.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
-      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.3.0.tgz",
+      "integrity": "sha512-j375ScV60dom+YkPFIfTLcOiPxkN/buHz5GobjLhixFuANaNs3C9l4GmrWqejgXWJ7BbJcFYpTEUkS1Ge8bpZQ==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index b90e27d..949afd5 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
-    "@types/node": "^20",
+    "@types/node": "^26",
     "@types/papaparse": "^5.5.2",
     "@types/react": "^19",
     "@types/react-dom": "^19",